I haven't done a review on Serenity, but I plan to.

As every woman is different, I can only share with you with my own personal experiences and opinion with it.
Personally, I LOVE it!!!! The size and insertable length is perfect for me. I honestly have never failed to have an orgasm with it.
Its waterproof, and easy to clean. I've never gotten any water up in it. I wash it with soap and water, and I keep it in the container it came with... which is very convenient. If you drop it, or if it gets on your sheets or something like that, it will get lint and hair on it. But like I said, very easy to clean so its not really an issue for the most part.
There is some texture to it, but its nothing major. And the material is rubbery soft. I don't really know how else to describe it but I like it. (Plus, I'm really tired right now, so I may not make a whole lotta sense. lol)
It takes 2 double A batteries.
It has 3 speeds for both the shaft and the clit. I like the simplicity of that, cause in the moment I don't want to have to "think" about what buttons i need to push or what needs doing. lol
The vibrations are strong, at least to me, though I usually end up using the strongest one. And I like the clit part of it. It looks like a thumb to me. And when I am using it, it rubs up and down my clit, which feels really good.
Of course, this just my own personal experience.

I hope I was able to cover the basics for you. I think its a great toy, and its definitely my favorite. If you get it, I hope you enjoy it as well.

I read reviews of the bendable touch and many say that the vibes from the bunny are not strong enough. I am up in the air between this one, The bendable touch or the Smile Pearl bunny.